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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        table{
            border-collapse: collapse;
        }
        th,td{
            border: 1px solid red;
            width: 100px;
            height: 30px;
        }

    </style>
</head>
<body>
    hello<img src=".1/png" alt="图片找不到了---" width="100px" height="100px">hello

    <table align="center" border="2" cellspacing="0" cellpadding="0">
        <caption>学生信息表</caption>
        <thead>
            <tr>
                <th>姓名</th>
                <th>学号</th>
                <th>年龄</th>
                <th>性别</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td colspan="2">张三</td>
                <td>30</td>
                <td>男</td>
            </tr>
            <tr>
                <td rowspan="2">张三</td>
                <td>123456789</td>
                <td>30</td>
                <td>男</td>
            </tr>
            <tr>
                
                <td>154624378</td>
                <td>29</td>
                <td>男</td>
            </tr>
        </tbody>
        <tfoot>
            <tr>
                <td>李四</td>
                <td>154624378</td>
                <td>29</td>
                <td>男</td>
            </tr>
        </tfoot>
        
    </table>
    <table>
        <caption>学生信息表</caption>
        <tr>
            <th>姓名</th>
            <th>学号</th>
            <th>年龄</th>
            <th>性别</th>
        </tr>
        <tr>
            <td>张三</td>
            <td>123456789</td>
            <td>30</td>
            <td>男</td>
        </tr>
        <tr>
            <td>李四</td>
            <td>154624378</td>
            <td>29</td>
            <td>男</td>
        </tr>
    </table>
</body>
</html>